Mwc 342: results and analysis of photometric variations of brightness
Keywords:
Photometric BVRI, photometric observation, zenith distance, intrinsic polarization, criterion 2 n, brightness variations, periodogram, phase-process diagram.Abstract
The results and analysis of photometric measurements for MWC 342 are given. The photometric BVRI dates were received with CCD camera ST-7 and filters of SBIG. In spite of that R and I filters gives the magnitudes in Johnson-Cousins system, we reduced our observations to the standard Johnson system. All photometric observations were corrected for flat field, received from twilight sky.The cyclic changes of brightness with the period P=5588 of days are found. It is shown that on separate intervals of time the periodic changes with the period 115 days are possible but it is difficult to draw a conclusion about reality of cycle brightness variations on periods 100-200 days.References
1 Merrill P.W., Humason H.L., Burwell C.G. //
Astrophys. J. – 1933. – Vol. 76. – 156 p.
2 Swings P., Struve O. // Astrophys. J. – 1943.
– Vol. 97. – 194 p.
3 Broseh N, Leibowitz E.H., Speetor N. // A&A.
– 1978. – Vol. 65. – 259 p.
4 Andrilat J. and Jaschek L. // A&A.Suppl. – 1999.
– Vol.136. – 59 p.
5 Arkhipova V.P. and Ipatov A.P. // SvA8, L
– 1982. – 288 p.
6 Allen D.A. // Mon. Notic. Roy. Astron. Soc.
– 1973. – Vol.161. – 145 p.
7 Zickgraf F.J. and Sulter- Ladback R.E. // A&A.
– 1989. – Vol. 214. – 274 p.
8 Herbst W., Herbst D.K., Grossman E.I. //
Astrophys. J. – 1994. – Vol. 108. – 109 p.
9 Bergner Y.K., Miroshnichenko A.S., Yudin
R.V., Kuratov K.S., Mukanov D.B., Sheikina T.A. //
A&A.Suppl. – 1995. – Vol.112. – P. 221-228.
10 Miroshnichenko A.S., Corporon P. // A&A. –
1999. – Vol.349. – P. 126-134.
Astrophys. J. – 1933. – Vol. 76. – 156 p.
2 Swings P., Struve O. // Astrophys. J. – 1943.
– Vol. 97. – 194 p.
3 Broseh N, Leibowitz E.H., Speetor N. // A&A.
– 1978. – Vol. 65. – 259 p.
4 Andrilat J. and Jaschek L. // A&A.Suppl. – 1999.
– Vol.136. – 59 p.
5 Arkhipova V.P. and Ipatov A.P. // SvA8, L
– 1982. – 288 p.
6 Allen D.A. // Mon. Notic. Roy. Astron. Soc.
– 1973. – Vol.161. – 145 p.
7 Zickgraf F.J. and Sulter- Ladback R.E. // A&A.
– 1989. – Vol. 214. – 274 p.
8 Herbst W., Herbst D.K., Grossman E.I. //
Astrophys. J. – 1994. – Vol. 108. – 109 p.
9 Bergner Y.K., Miroshnichenko A.S., Yudin
R.V., Kuratov K.S., Mukanov D.B., Sheikina T.A. //
A&A.Suppl. – 1995. – Vol.112. – P. 221-228.
10 Miroshnichenko A.S., Corporon P. // A&A. –
1999. – Vol.349. – P. 126-134.
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How to Cite
Andreyev, A. V., Kurchakov, A. V., & Rspaev, F. K. (2012). Mwc 342: results and analysis of photometric variations of brightness. International Journal of Mathematics and Physics, 3(1), 40–43. Retrieved from https://ijmph.kaznu.kz/index.php/kaznu/article/view/65
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Chemical Physics and Radio Phisics
